Ring (5)
(Other definitions for echo that I've seen before include "Greek nymph, spurned by Narcissus, who pined away until only her voice remained" , "Nymph; E (radio comms.)" , "repetitive" , "Marked by heat" , "Say again or imitate" .)
'ring' is the definition.
(a bell tolls)
This is the entire clue.
(Other definitions for toll that I've seen before include "Charge for passage" , "Charge to use bridge/road" , "Charge to use, eg, bridge" , "Tax paid for use of some roads" , "What sounds" .)
'ring' is the definition.
(I know that peal is a kind of ring)
This is the entire clue.
(Other definitions for peal that I've seen before include "Deep prolonged sound" , "(Bells) ring" , "Thunderous roar" , "Chime" , "Loud ringing of bells" .)
'ring' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for circle that I've seen before include "Group; move round" , "Group (of people); go round" , "Go round -- social group" , "Draw line around (something)" , "Theatre tier; go round" .)
'ring' is the definition.
(ring is a kind of arena or venue)
This is the entire clue.
(Other definitions for arena that I've seen before include "Sit around here being entertained" , "centre of conflict" , "theatre" , "Stadium - battlefield" , "Enclosure for sports etc." .)
'ring' is the definition.
(eg a bell chimes or rings)
This is all the clue.
(Other definitions for chime that I've seen before include "(Of bells) ring" , "Bell's sound" , "Agree (with); ring" , "Struck bell" , "(Bell) sound the hour" .)
'ring' is the definition.
(I know that knell is a kind of ring)
This is the entire clue.
(Other definitions for knell that I've seen before include "Toll (bell)" , "Funereal bell sound" , "''The curfew tolls the ... of parting day'' (Thomas Gray)" , "Toll, ring" , "it precipitates death" .)
'ring' is the definition.
(I know that ring can be written as telephone)
This is the entire clue.
(Other definitions for telephone that I've seen before include "Call, ring" , "Electronic sound equipment" , "Worldwide system of communication" , "Communication device" , "Reference book for callers" .)